Combined hydraulic motor and pump.



0. P. ROI-IR.

COMBINED HYDRAULIC MOTOR AND PUMP. APPLICATION FILED NOV. 29, 1911.

1,057,777. I 0' PatentedApr.1,l913.

wLUMaIA PLANOGRAPH co..WAsmNGTo1 -l. D. c.

UNITED STATES PATENT OFFICE.

oTTo P. Bonn, or SEATTLE, WASHINGTON.

COMBINED HYDRAULIC MOTOR AND PUMP.

Specification of Letters Patent.

Application filed November 29, 1911.

Patented Apr. 1, 1913.

Serial No. 663,134.

certain new and useful Improvements in- Combined Hydraulic Motors andPumps, of which the following is a specification.

My invention has particular reference to an improved construction of theabove type operated through pressure generated incident to the arrestingof the momentum of a body of flowing water, and has for a fundamentalobject to provide mechanism of this character which is comparativelysimple in construction and capable of operation in an efficient manner.

A further object resides in the provision of valve mechanism controlledin a novel manner for closing the discharge ports of the drive passages.

Other objects will be set forth as my description progresses and thosefeatures of construction, arrangements and combinations of parts onwhich I desire protection, succinctly defined in my annexed claims.

Referring to the accompanying drawing wherein like numerals of referenceindicate like parts throughout the several views: Figure 1 is ahorizontal section of my apparatus. Fig. 2 is a fragmentary verticallongitudinal section thereof taken on line 2-2 of Fig. 1, and Fig. 3 isa transverse section, on reduced scale, taken on line 33 of Fig. 2.

Referring to the drawing by numerals of reference, 1, 1 indicate spaceddrive passages for the water, the same being conveniently provided in asuitable casing 10 and having intake and discharge ports 2 and 3respectively, the latter of which are controlled by valves 4.

Reference numeral 5 indicates a prime mover or piston mounted forreciprocatory movement in a cylinder or chamber 6 extending between andhaving its end portions opening into the adjacent drive passages, asclearly shown in Fig. 1. Fixed to piston 5 are plungers or rams 6, 6operating in pump chambers 7, 7 respectively, which latter are providedwith inlet and outlet ports 8, 8' normally closed by suitable upwardlyopening valves 9, 9 respectively in a manner similar to that disclosedin my application Serial No. 671,375,filed January 15, 1912, Plungers orrams 6, 6 are conveniently guided in hollow extensions 11 of chambers 7,7 which latter can be provided with packing held in position, as byglands 12, and plunger 6 is further guided in its movement by a fixedguide 13, of'the adjacent pump chamber, which is freely received in asuitable bore 6 of the plunger. Communication is had between pumpchamber 7, 7 and the adjacent drive passages 1, 1

through passages 14: which lie at the outerv sides of said drivepassages, in opposing relation to cylinder 6 and being protected againstingress of foreign substances, by the foraminous walls 15. Outlet ports8 of chambers 7, 7 open into pasageways 16 leading to an air chamber 17,having the usual discharge opening 18.

Valves a which, as now considered, are arranged vertically and providedon their upper and lower end portions with centrally disposed studsjournaled in casing 10, are connected for simultaneous movement by alink 19 in such a manner that with one valve in closed position theother will be open or in other words, lie parallel with the flow ofwater in the drive passage so as to be held thereby against accidentalclosing movement. The side edges of valves 4 are adapted to seat on thevertical straight edge portions of the end flanges of cylinder 6 and theadjacent walls of casing 10.

Reference numerals 20, 21 indicate deflectors which are movable withpiston 5 for effecting the operation of valves 4, the same, as nowconsidered, comprising curved plates fixed to piston 5 and each lying ona respective side thereof for movement into the adjacent drive passages.

Assuming that drive passages 1, 1, are connected with a suitable sourceto receive flowing water, with the parts arranged as shown in Fig. 1,the operation is as follows: Piston 5, being at the end of its stroke,has just moved deflector 20 against the adjacent valve 4, to start thesame on its closing movement. This movement is completed by the current,the water at such time being deflected by defiector 20 so that thepreponderance of pressure thereof will fall on the outwardly moving sideof the valve. The force generated by the sudden check in the momentum ofthe water causes a portion of the latter to flow through ports 8 intopump chamber 7, and a portion may pass to air chamber 17, this obviouslydepending on the pressure in the latter. On the next cor respondingstroke of piston 5, plunger 6 acts on the water in chamber 7 todischarge a portion of the same. ater flows into chamber 7 as plunger 6is withdrawn, or during the rearward stroke of piston 5, during whichmovement deflector 21 is moved into drive passage 1 and against its*alve 4: to close the latter, and thereby simultaneously open the othervalve at so that piston 5 can start on its return stroke. The closing ofthis last mentioned valve t causes the water from drive passage 1 topass into pump chamber 7 in a manner identical with that referred to inconnection with pump chamber 7.

Reference numeral 21 indicates a perforated protecting wall extendingaround the discharge end of the apparatus.

Having thus described my invention what I claim as new, and desire tosecure by Letters Patent of the United States of America, is:

1.111 an apparatus of the character described, spaced drive passages,valves for said passages, a reciprocatory piston, a cylinder for saidpiston having each end portion connected with a respective drive passagein advance of the valve thereof, an air chamber having a valvedconnection with one of said drive passages, and means actuated by andduring movement of said piston for closing said valves alternately.

2. In apparatus of the character described, spaced drive passages,valves for said passages, means connecting said valves for movement ofone to its open position simultaneously with the moving of the other toits closed position, a reciprocatory piston, a cylinder for said pistonhaving each end portion connected with a respective drive passage inadvance of the valve thereof, an air chamber having a valved connectionwith one of said drive passages, and means actuated by and duringmovement of said piston for opening and closing said valves.

3. In apparatus of the character de scribed, spaced drive passages,valves for said passages, means comiecting said valves for movement ofone to its open position simultaneously with the moving of the other toits closed position, a reciprocatory piston, a cylinder for said pistonhaving each end portion connected with a respective drive passage inadvance of the valve thereof, an air chamber having valved connectionswith said drive passages, and means actuated by and during movement ofsaid piston for opening and closing said valves.

4. In, apparatus of the character described, spaced drive passages,pivoted valves for said passages, means connecting said valves formovement of one to its open position simultaneously with the moving ofthe other to its closed position, a reciprocatory piston, a cylinder forsaid piston having each end portion connected with a re spective drivepassage in advance of the valve thereof, an air chamber having a valvedconnection with one of said drive passages, and curved deflector membersfor operating said valves, said members being connected for movementwith said piston and lying on opposite sides thereof for proj-ectioneach into a respective drive passage to thereby deflect the flowingwater against one side of the adjacent valve.

5. An apparatus of the character described provided with spaced drivepassages provided with intake and discharge openings for the passage offluid, pivoted valves for the discharge openings of said drive passages,means connecting said valves for simultaneous movement of one to itsclosed position and the other to its openposition, a pump chamberconnected to receive fluid from one of said drive passages, a valvecontrolling the communication between said pump chamber and said lastnamed drive passage, a piston chamber extending between and opening intosaid drive passages, a p1ston in said last named chamber, a ramoperating in said pump chamber and connected with said piston, and meansfor closing said valves alternately comprising deflectors for the waterconnected for movement into said drive passages by and during movementof said piston, for the purpose specified.

6. In apparatus of the character described, spaced drive passages,valves for said passages, a reciprocatory piston, a cylinder for saidpiston having each end portion connected with a respective drive passagein advance of the valve thereof, a pump chamber connected with one ofsaid drive passages in advance of the valve thereof, a plunger in saidpump chamber connected with said piston for operation thereby, and meansactuated by and during movement of said piston for closing said valvesalternately.

7. An apparatus of the character described provided with spaced drivepassages provided with intake and discharge openings for the passage offluid, valves for the discharge openings of said drive pas sages, meansconnecting said valves for simultaneous movement of one to its closedposition and the other to its open position, a

pump chamber connected to receive fluid from one of said drive passages,a valve controlling the communication between said pump chamber and saidlast named drive passage, a piston chamber extending between and openinginto said drive passages in advance of the valves thereof, a piston insaid last named chamber, a ram operating in said pump chamber andconnected with said piston, and means operated by movement of saidpiston for operating said valves to close said drive passagesalternately.

8. An apparatus of the character described provided with spaced drivepassages provided with intake and discharge openings for the passage offluid, valves for the discharge openings of said drive passages, meansconnecting said valves for simultaneous movement of one to its closedposition andthe other to its open position, a pump chamber connected toreceive fluid from one of said drive passages, a valve controlling thecommunication between said pump chamber and said last named drivepassage, a piston chamber extending between and opening into said drivepassages in advance of the valves thereof, a piston in said last namedchamber, a ram operating in said pump chamber and connected with saidpiston, and means movable with said piston for operating said valves toalternately close said drive passages.

9. In apparatus of the character described, a drive passage, a valve forsaid drive passage, a chamber extending at an angle to said drivepassage and communicating therewith in advance of said valve, a drivingmeans mounted in said chamber for movement toward and from said passageand operated in one direction by fluid therein, and means for deflectingwater against said valve to thereby operate the same, said last namedmeans being supported for advance movement by said driving means.

10. In apparatus of the character described, a drive passage, a valvefor said drive passage, a chamber extending at an angle to saiddrivepassage and communicating therewith in advance of said valve, a drivingmeans mounted in said chamber for movement toward and from said passageand operated in one direction by fluid therein, a pump chamber havingvalved connection with said drive passage, a plunger in said pumpchamber connected with said driving means for operation thereby, andmeans operated by and during movement of said driving means foroperating said valve in one direction.

11. In apparatus of the character described, spaced drive passages,valves for said drive passages, means connecting said valves forsimultaneous movement of one to its closed position and the other to itsopen position, a piston, a cylinder for said piston having each endportion communicating with a respective drive passage in advance of thevalve thereof, and means operated by and during movement of said pistonfor operating said valves.

12. In apparatus of the character described, spaced drive passages,valves for said drive passages, means connecting said valves forsimultaneous movement of one to its closed position and the other to itsopen position, a piston, a cylinder for said piston having each endportion communicating with a respective drive passage in advance of thevalve thereof, and means for deflecting water against said valves tothereby close the same supported for advance movement by said piston.

Signed at Seattle, WVashington this 16th day of November 1911.

OTTO P. ROI-IR. Witnesses:

R. E. BORGEN, STEPHEN A. BRooKs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

